ANALISIS PENERAPAN E-BUSINESS STUDI KASUS PADA BANK TABUNGAN PENSIUNAN NASIONAL ( BTPN ), TBK. E-Bisnis [Internet]. 2019 Jul. 3 [cited 2026 Jun. 6];12(1):1-12. Available from: https://journal.stekom.ac.id/index.php/Bisnis/article/view/78